Miner&#39;s ratchet-drill.



No. 689,823. i Patented Dec. 24 |90|./

J.. LUCAS, L. E.DECKE'R &. C. V. HODVER'.

MINERS RATGHET DRILL.

(Appumm mod n. as, 190.)

(nuv Model.)

Y f3@ #faam LP/MM C0 PNBTDJJTHO.. WASNINBTQN. DA C. l

UNITED STATES rPAfmNT OFFICE.

JAMES LUCAS, LUCIUS EDWARD DECKER, AND CLAUDE VICTOR HOOVER,

OF CHATTANOOGA, TENNESSEE. V

MIN ERS RATCHYET-DRILL.

SPECIFICATION forming part of Letters Patent No. 689,823, dated'December24, 1901.

Application filed February 23, 1900. Serial No. 6,322. (No model.)

To @ZZ whom, it may con/cern:

Beit known that we, JAMES LUCAS, LUCIUs EDWARD DECKER, and CLAUDE VICTORHOOVER, citizens of the United States, residing at Chattanooga, in thecounty of -Hamilton and State of Tennessee, have invented certainnew'and useful Improvements in Miners Ratchet-Drills; and we do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to the annexeddrawings, making a part of this specification, and to gures of referencemarked thereon.

Figure 1 of the drawings isa section viewof the drill complete. Fig; 2is a planof same. Fig. 3 is an end view of the ratchet-wheel.

Figs. 4 and 5 are views showing in reverse the eccentricity of thegrooves in the ratchetwheel. Fig. 6 is an elevation of the two halves ofthe nut. p

The same reference iigures indicate the same parts in all the views.

Our invention relates to improvements in that class of miners drillsthatare revolved by a lever and fed in by a screw. HeretoforeA when thedrill was fed in the length of the screw you had to back oft and takethe nut out of the socket and return the screw; but this construction isobjectionable, as it was slow and complicated.

The object of our invention is to overcome this objection by opening thenut by an eccentric and return the screw.

The annexed drawings, to which reference is made, fully illustrate theimprovement.

In-the drawings, 8 isv the screw. 9 is the Vnut," made in two separate'halves, with projections or pins 15, that work in the eccentric grooves16, made in theratchet-wheel. These eccentric grooves are made in suchshape that they will come together and clamp the nut on the screw whenthe lever is pulled forward, and they will open and release the screwwhen the levelis moved backward, so you can return the screw to thestarting-point without delay. i In Fig'. l, 8 is the screw. -v 9 is thenut. 10 is the ratchet,rwith. teeth 14 made like cogs, so the pawl 12can move it either way. 13is the'lever. l5 is the projection on the nut.16 shows the eccentric grooves in the ratchet= wheel. 17 is a handheldat the top of the pawl, so it can be reversed so as to move the ratchetbackward. v

Having thus describedour invention, what we claim is In combination adrilling apparatus for mining and other purposes consisting of a screwand ratchet a nut made in two halves, with a lug on the back of eachhalf, a cam working around the nut and the cam-grooves engaging the saidlugs, a cog-wheel for a ratchet with a reversible pawl as shown anddescribed for the purpose specied. Y

In testimony whereof we aflix our signatures in presence of twowitnesses.

JAMES LUCAS. LUCIUS EDWARD DECKER.v CLAUDE VICTOR HOOVER. Witnesses:

CRY, A. GIBSON.

